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DynamoDB vs MongoDB NoSQL [closed]
...can have multiple secondary global indexes. I'm doing queries on a single table with 4 possible filter parameters and sorting the results, this is supported (barely) through the use of the global secondary indexes with filter expressions. The problem comes in when you try to get the total results ...
Set value to NULL in MySQL
...t NULL inside quotes in your update statement. This should work:
UPDATE table SET field = NULL WHERE something = something
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Shortcuts in Objective-C to concatenate NSStrings
...ly as pleasant as just having a concatenation operator.
First, use an NSMutableString, which has an appendString method, removing some of the need for extra temp strings.
Second, use an NSArray to concatenate via the componentsJoinedByString method.
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Default implementation for Object.GetHashCode()
...d it is common to also provide ==/!=operators, and often to implement IEquatable<T> too.
For generating the hash code, it is common to use a factored sum, as this avoids collisions on paired values - for example, for a basic 2 field hash:
unchecked // disable overflow, for the unlikely possi...
How to create a SQL Server function to “join” multiple rows from a subquery into a single delimited
To illustrate, assume that I have two tables as follows:
13 Answers
13
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MySql - Way to update portion of a string?
...
I think this should work:
UPDATE table
SET field = REPLACE(field, 'string', 'anothervalue')
WHERE field LIKE '%string%';
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Why is vertical-align: middle not working on my span or div?
...ow: http://jsfiddle.net/m3ykdyds/200
/* CSS file */
.main {
display: table;
}
.inner {
border: 1px solid #000000;
display: table-cell;
vertical-align: middle;
}
/* HTML File */
<div class="main">
<div class="inner"> This </div>
</div>
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Order Bars in ggplot2 bar graph
...y axis and the shortest bar would be furthest. So this is kind of like the Table I have
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MVC 5 Seed Users and Roles
...AppAdmin");
}
}
I used package-manager "update-database". DB and all tables were created and seeded with data.
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How to get UITableView from UITableViewCell?
I have a UITableViewCell which is linked to an object and I need to tell if the cell is visible. From the research I've done, this means I need to somehow access the UITableView that contains it (from there, there are several ways to check if it's visible). So I'm wondering if UITableViewCell ...